On Thu, Mar 19, 2009 at 09:52:42PM -0400, Brandon Hilkert wrote:
> I understand what you mean about sending to one server. I'm going to try
> and setup a few more receiving servers so that I can more accurately
> simulate sending it out to the internet.
Did you at least take time to rule out the "syslog" bottleneck? This is
a common problem with stock Linux configurations, where syslog hammers
the disk so hard that Postfix can't get any I/O done. Throughput as low
as 10 msgs/sec is strongly suggestive of something like that, or perhaps
just failure to send in parallel, or insufficient concurrency in output
processing because all the test messages are routed to the same local(8)
mailbox.
Linux servers that are 5 years can do 300-400 msgs/sec, when the disk is
managed by a RAID controller with an 8MB battery cache, and IIRC somewhere
between 50 and 100 msgs/sec with the cache off.
Start with syslog, then figure out where the messages are accumulating,
see QSHAPE_README.
--
Viktor.
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